Yann Mikaeloff, Séverine Gilard-Pioc, Jonathan Cottenet, Fabrice Jollant, Sonia Bechraoui-Quantin, Catherine Quantin, Mélanie Loiseau, Andreas Jud, Irène François-Purssell, Service de médecine légale (Institut médico-légal et Unité médico-judiciaire) (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service Biostatistiques et Informatique Médicale (CHU de Dijon) (DIM), Centre de recherche en épidémiologie et santé des populations (CESP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Paul Brousse-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), GHU Paris Psychiatrie et Neurosciences, McGill University = Université McGill [Montréal, Canada], Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Lucerne University of Applied Sciences and Arts [Luzern], Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques (CIC-EC), Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Institut National de la Santé et de la Recherche Médicale (INSERM), European Cooperation in Science and Technology, COST, Agence Nationale de la Recherche, ANR, and HAL UVSQ, Équipe
International audience; Background: In France, the COVID-19 pandemic led to a general lockdown from mid-March to mid-May 2020, forcing families to remain confined. We hypothesized that children may have been victims of more physical abuse during the lockdown, involving an increase in the relative frequency of hospitalization. Methods: Using the national administrative database on all admissions to public and private hospitals (PMSI), we selected all children aged 0–5 years hospitalized and identified physically abused children based on ICD-10 codes. We included 844,227 children hospitalized in March–April 2017–2020, of whom 476 (0.056%) were admitted for physical abuse. Relative frequency of hospitalization for physical abuse observed in March to April 2020 were compared with those from the same months in the three previous years (2017–2019). Findings: Even if absolute number of children exposed to physical abuse did not fluctuate significantly, we found a significant increase in the relative frequency of young children hospitalized for physical abuse from 2017 (0.053%) to 2020 (0.073%). Compared with the 2017–2019 period, and considering the observed decrease in the number of overall hospital admissions during the first lockdown, the number of children exposed to physical violence was 40% superior to what would be expected. Interpretation: The sharp increase in the relative frequency of hospitalizations for physical abuse in children aged 0–5 years in France is alarming. As only the most severe cases were brought to the hospital for treatment during the lockdown, our figures probably only represent the tip of the iceberg of a general increase of violence against young children.